US20140123550A1 - Use of 1,1-diethoxyethane for increasing knocking resistance of automotive gasoline - Google Patents
Use of 1,1-diethoxyethane for increasing knocking resistance of automotive gasoline Download PDFInfo
- Publication number
- US20140123550A1 US20140123550A1 US14/112,873 US201214112873A US2014123550A1 US 20140123550 A1 US20140123550 A1 US 20140123550A1 US 201214112873 A US201214112873 A US 201214112873A US 2014123550 A1 US2014123550 A1 US 2014123550A1
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- United States
- Prior art keywords
- gasoline
- low
- diethoxyethane
- boiling
- octane number
- Prior art date
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- Granted
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/10—Use of additives to fuels or fires for particular purposes for improving the octane number
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
- C10L1/023—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only for spark ignition
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
- C10L1/1852—Ethers; Acetals; Ketals; Orthoesters
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/30—Physical properties of feedstocks or products
- C10G2300/305—Octane number, e.g. motor octane number [MON], research octane number [RON]
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
- C10L2200/0407—Specifically defined hydrocarbon fractions as obtained from, e.g. a distillation column
- C10L2200/0415—Light distillates, e.g. LPG, naphtha
- C10L2200/0423—Gasoline
Definitions
- the present invention relates to the use of 1,1-diethoxyethane (acetaldehyddiethyl-acetate) as an antiknock agent for carburetor fuels (automotive gasoline).
- the subject matter of the invention also includes the automotive gasoline obtained by adding the antiknock agent according to the invention.
- automotive gasoline only the correct term “automotive gasoline” will hereinafter be used for what is colloquially called “carburetor fuel”.
- automotive gasoline e.g. Super or Superplus
- the knocking resistance is the quality of a gasoline used in an Otto engine not to burn in an uncontrolled manner (“knocking”) due to self-ignition but only as controlled by ignition sparks, injection or compression.
- automotive gasoline is mixed with additives, so-called antiknock agents, which reduce the knock proneness of the Otto engine by increasing the octane number.
- the octane number defines the measure for the knocking resistance of automotive gasoline.
- the Research Octane Number (RON) is determined according to DIN EN ISO 5164 (ASTM D 2699) and describes the knocking behavior at a low engine load and low rotational speeds.
- the Motor Octane Number (MON) is determined according to DIN EN ISO 5163 (ASTM D 2700) and describes the behavior at a high engine load and under high thermal stress.
- organic lead compounds in particular lead alkyls such as tetraethyl lead, were used as antiknock agents.
- oxygen-containing compounds oxygenates
- alcohols or ethers are used since lead damages the car's catalytic converter, in addition to being toxic and environmentally harmful.
- methyl-tert-butyl-ether MTBE
- MTBE is an environmental pollutant that is difficult to biodegrade (its half-life in groundwater is 10 to 15 years).
- another antiknock agent used in Russia is e.g. N-methylaniline (monomethylaniline, MMA), which has a better antiknock effect than MTBE or methanol but causes carcinogenic N-nitrosamines to be formed.
- U.S. Pat. No. 6,514,299 describes a composition of 85 to 99% by volume of C 1 -C 4 alcohol and 1 to 15% by volume of an ether compound, selected from the group of dialkoxyalkanes, alkoxyalkanols, trialkoxyalkanes, dialkoxycycloalkanes and arylalkyldiethers, as an antiknock agent.
- Said composition is produced by heating a C 1 -C 4 alcohol in the presence of a neutral or basic platinum catalyst.
- the composition shows a synergistic increase of the octane number.
- 1,1-diethoxyethane is added in an amount of 5 to 20% by volume, preferably 5 to 10% by volume.
- the low-boiling gasoline with an IBP of 80° C. to 120° C. serves as basic gasoline and has an RON and an MON of at least 70 units each, preferably 75 units each.
- the automotive gasoline according to the invention is produced by adding 1,1-diethoxyethane and usual additives such as antioxidants, corrosion-protective agents, detergents (to protect the injection system against deposits), carburetor icing inhibitors, ignition accelerators, etc. or mixtures thereof.
- the basic gasoline used has an initial boiling point of preferably 80 to 115° C., particularly preferred 85 to 110° C., especially preferred 90° C. to 110° C. According to the invention, it is preferred that 5 to 10% by volume, particularly preferred approx. 5% by volume, of 1,1-diethoxyethane, be added.
- the subject matter of the invention also includes an automotive gasoline with a Research Octane Number of 110 to 140 units, comprising a low-boiling gasoline with an initial boiling point (IBP) of 80° C. to 120° C. as basic gasoline, 1,1-diethoxyethane as antiknock agent and usual additives, wherein further antiknock agents are excluded.
- the automotive gasoline of the invention has a Motor Octane Number of 95 to 140 units, particularly preferred 100 to 140 units.
- the automotive gasoline of the invention comprises 1,1-diethoxyethane and usual additives but no further antiknock agents, in particular no C 1 -C 4 alcohols, which, in combination with special 1,1-dialkoxyalkanes, are described as antiknock agents in U.S. Pat. No. 6,514,299. Also, the automotive gasoline does not comprise ketals of the general formula R 3 O—C(R 1 )(R 2 )—OR 4 , which, in combination with dimethoxymethane, are described as an antiknock agent in DE 31 33 899 A1.
- 1,1-diethoxyethane added to gasoline prevents soot formation and, in addition, acts like a cleanser that removes carbon deposits in the engine cylinder and ensures the injection pump is kept clean.
- 1,1-diethoxyethane is added to commercial gasoline (containing 15, 10 or 20% of ethanol), said gasoline will be stable and no unmixing will occur for 1 to 1.5 years. This is also true of the automotive gasoline of the present invention.
- 1,1-diethoxyethane was synthesized according to known methods; its boiling point was determined to be 103° C. and its refractive index was determined to be 1.3819 (n d 20 ).
- the compounds listed in Table 1 were added to low-boiling gasoline with an IBP of 110° C. in the amounts by volume shown, in order to compare them with 1,1-diethoxyethane. Diethoxyethane was added to low-boiling gasoline fractions with an IBP of 100° C. and an IBP of 110° C.
- the RON was measured according to ASTM D 2699-86 using a Shatox SX-300 or Shatox SX-150 NEW analyser and extrapolated where appropriate.
- the MON was determined in the same way according to ASTM D 2700-86.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Combustion & Propulsion (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
Description
- The present invention relates to the use of 1,1-diethoxyethane (acetaldehyddiethyl-acetate) as an antiknock agent for carburetor fuels (automotive gasoline). The subject matter of the invention also includes the automotive gasoline obtained by adding the antiknock agent according to the invention. In the present application, only the correct term “automotive gasoline” will hereinafter be used for what is colloquially called “carburetor fuel”.
- There are different types of automotive gasoline, e.g. Super or Superplus, which differ in their knocking resistance. The knocking resistance is the quality of a gasoline used in an Otto engine not to burn in an uncontrolled manner (“knocking”) due to self-ignition but only as controlled by ignition sparks, injection or compression. For this purpose, automotive gasoline is mixed with additives, so-called antiknock agents, which reduce the knock proneness of the Otto engine by increasing the octane number.
- This means the octane number defines the measure for the knocking resistance of automotive gasoline. The figure of the octane number up to 100 indicates the amount in % by volume of isooctane C8H18 (RON=100) that must be contained in a mixture with n-heptane C7H16 (RON=0) so that said mixture has the same knocking resistance (in a test engine according to RON or MON) as the fuel to be tested. For example, an octane number of RON=95 of a gasoline would mean that the knocking resistance of said gasoline is the same as that of a mixture of 95% by volume of isooctane and 5% by volume of n-heptane.
- The Research Octane Number (RON) is determined according to DIN EN ISO 5164 (ASTM D 2699) and describes the knocking behavior at a low engine load and low rotational speeds. The Motor Octane Number (MON) is determined according to DIN EN ISO 5163 (ASTM D 2700) and describes the behavior at a high engine load and under high thermal stress.
- In the past, organic lead compounds, in particular lead alkyls such as tetraethyl lead, were used as antiknock agents. Now, oxygen-containing compounds (oxygenates) such as alcohols or ethers are used since lead damages the car's catalytic converter, in addition to being toxic and environmentally harmful. As gasoline-alcohol mixtures tend to unmix in the presence of water and/or at low temperatures, methyl-tert-butyl-ether (MTBE) is mostly used as antiknock agent today. However, MTBE is an environmental pollutant that is difficult to biodegrade (its half-life in groundwater is 10 to 15 years). Besides MTBE, another antiknock agent used in Russia is e.g. N-methylaniline (monomethylaniline, MMA), which has a better antiknock effect than MTBE or methanol but causes carcinogenic N-nitrosamines to be formed.
- The patent literature also suggests a number of compounds for increasing the knocking resistance of carburetor fuels.
- For example, U.S. Pat. No. 6,514,299 describes a composition of 85 to 99% by volume of C1-C4 alcohol and 1 to 15% by volume of an ether compound, selected from the group of dialkoxyalkanes, alkoxyalkanols, trialkoxyalkanes, dialkoxycycloalkanes and arylalkyldiethers, as an antiknock agent. Said composition is produced by heating a C1-C4 alcohol in the presence of a neutral or basic platinum catalyst. The composition shows a synergistic increase of the octane number.
- DE 31 33 899 A1 suggests ketals of the general formula R3O—C(R1)(R2)—OR4 to be added, wherein R1 is CH3, C2H5 or C3H7, R2 represents CH3 or C2H5, and R3 and R4 may be CH3, C2H5, C3H7 or C4H9. If appropriate, said dialkoxyalkanes are added in combination with dialkoxymethanes. In a preferred embodiment, 2,2-dialkoxypropanes (in particular 2,2-dimethoxypropane) are used, if appropriate in combination with dimethoxymethane. The results of this application show that said additives increase the Research Octane Number and the Motor Octane Number by max. 2.5 units.
- It was the object of the present invention to provide an alternative antiknock agent for automotive gasoline, which achieves a significant increase of the Research Octane Number as well as the Motor Octane Number.
- It has surprisingly been found that the sole addition of 1,1-diethoxyethane to low-boiling gasoline with an initial boiling point (IBP) of 80° C. to 120° C. results in a significant increase of the knocking resistance of the Research Octane Number (RON) by at least 40 units. The MON is increased by 25 to more than 40 units, preferably by 30 to 40 units. 1,1-diethoxyethane is added in an amount of 5 to 20% by volume, preferably 5 to 10% by volume. The low-boiling gasoline with an IBP of 80° C. to 120° C. serves as basic gasoline and has an RON and an MON of at least 70 units each, preferably 75 units each. The automotive gasoline according to the invention is produced by adding 1,1-diethoxyethane and usual additives such as antioxidants, corrosion-protective agents, detergents (to protect the injection system against deposits), carburetor icing inhibitors, ignition accelerators, etc. or mixtures thereof. The basic gasoline used has an initial boiling point of preferably 80 to 115° C., particularly preferred 85 to 110° C., especially preferred 90° C. to 110° C. According to the invention, it is preferred that 5 to 10% by volume, particularly preferred approx. 5% by volume, of 1,1-diethoxyethane, be added.
- The subject matter of the invention also includes an automotive gasoline with a Research Octane Number of 110 to 140 units, comprising a low-boiling gasoline with an initial boiling point (IBP) of 80° C. to 120° C. as basic gasoline, 1,1-diethoxyethane as antiknock agent and usual additives, wherein further antiknock agents are excluded. Preferably, the automotive gasoline of the invention has a Motor Octane Number of 95 to 140 units, particularly preferred 100 to 140 units.
- According to the invention, the automotive gasoline of the invention comprises 1,1-diethoxyethane and usual additives but no further antiknock agents, in particular no C1-C4 alcohols, which, in combination with special 1,1-dialkoxyalkanes, are described as antiknock agents in U.S. Pat. No. 6,514,299. Also, the automotive gasoline does not comprise ketals of the general formula R3O—C(R1)(R2)—OR4, which, in combination with dimethoxymethane, are described as an antiknock agent in DE 31 33 899 A1.
- It has also been found that 1,1-diethoxyethane added to gasoline prevents soot formation and, in addition, acts like a cleanser that removes carbon deposits in the engine cylinder and ensures the injection pump is kept clean.
- If 1,1-diethoxyethane is added to commercial gasoline (containing 15, 10 or 20% of ethanol), said gasoline will be stable and no unmixing will occur for 1 to 1.5 years. This is also true of the automotive gasoline of the present invention.
- The invention will now be explained in more detail with reference to exemplary embodiments.
- 1,1-diethoxyethane was synthesized according to known methods; its boiling point was determined to be 103° C. and its refractive index was determined to be 1.3819 (nd 20).
- The compounds listed in Table 1 were added to low-boiling gasoline with an IBP of 110° C. in the amounts by volume shown, in order to compare them with 1,1-diethoxyethane. Diethoxyethane was added to low-boiling gasoline fractions with an IBP of 100° C. and an IBP of 110° C. The RON was measured according to ASTM D 2699-86 using a Shatox SX-300 or Shatox SX-150 NEW analyser and extrapolated where appropriate. The MON was determined in the same way according to ASTM D 2700-86.
-
TABLE 1 Names of the components MON RON Gasoline, IBP 100° C. 78.0 80.0 Gasoline, IBP 100° C. (95%) + 107.0 127.0 diethoxyethane (5%) Gasoline, IBP 110° C. 82.0 82.0 Gasoline, IBP 110° C. (90%) + 98.0 129.0 diethoxymethane (10%) Gasoline, IBP 110° C. (95%) + 124.0 135.0 diethoxyethane (5%) Gasoline, IBP 110° C. (90%) + 130.0 140.0 diethoxyethane (10%) Gasoline, IBP 110° C. (90%) + 101.5 136.0 propylal (10%) Gasoline, IBP 110° C. (95%) + 119.3 146.6 butylal (5%) - The values obtained impressively show that the addition of 5 to 10% by volume of 1,1-diethoxyethane to low-boiling basic gasoline achieves an increase of the MON by 29 to more than 40 units and of the RON by more than 40 units.
Claims (13)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11163065 | 2011-04-19 | ||
EP11163065.3 | 2011-04-19 | ||
EP20110163065 EP2514804A1 (en) | 2011-04-19 | 2011-04-19 | Use of 1,1-dialkoxylanes to increase the anti-knock rate of motor fuel |
PCT/EP2012/057199 WO2012143465A1 (en) | 2011-04-19 | 2012-04-19 | Use of 1,1-diethoxyethane for increasing knocking resistance of automotive gasoline |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140123550A1 true US20140123550A1 (en) | 2014-05-08 |
US9005316B2 US9005316B2 (en) | 2015-04-14 |
Family
ID=46085006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/112,873 Expired - Fee Related US9005316B2 (en) | 2011-04-19 | 2012-04-19 | Use of 1,1-diethoxyethane for increasing knocking resistance of automotive gasoline |
Country Status (6)
Country | Link |
---|---|
US (1) | US9005316B2 (en) |
EP (2) | EP2514804A1 (en) |
CN (1) | CN103597061A (en) |
CA (1) | CA2833473A1 (en) |
RU (1) | RU2567541C2 (en) |
WO (1) | WO2012143465A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016084393A (en) * | 2014-10-24 | 2016-05-19 | 理研香料ホールディングス株式会社 | Odorant for fuel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2842432A (en) * | 1953-12-07 | 1958-07-08 | Texas Co | Supplementary fuel mixture for cold starting diesel engines |
US4276055A (en) * | 1979-09-05 | 1981-06-30 | Huang James P H | Novel fuel composition and the process of preparing same |
US6013114A (en) * | 1997-01-28 | 2000-01-11 | Clariant Gmbh | Environmentally friendly diesel fuel |
US6113661A (en) * | 1997-06-09 | 2000-09-05 | Elf Antar France | Fuel composition for diesel engines containing oxygenated compounds |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1582420A (en) * | 1925-07-09 | 1926-04-27 | Nikaido Yasujuro | Motor fuel |
US2237660A (en) * | 1939-01-14 | 1941-04-08 | Standard Oil Dev Co | Polyfurcous fuel |
DE2216880C2 (en) * | 1971-05-05 | 1983-08-25 | Österreichische Hiag-Werke AG, Wien | Fuel additive |
US4374648A (en) * | 1980-05-30 | 1983-02-22 | Chevron Research Company | Motor fuel composition |
DD157969A3 (en) | 1980-09-16 | 1982-12-22 | Juergen Welker | FUELS FOR OTTO ENGINES |
US6514299B1 (en) | 2000-11-09 | 2003-02-04 | Millennium Fuels Usa, Llc | Fuel additive and method therefor |
RU2008130735A (en) * | 2008-07-25 | 2010-01-27 | Юрий Владимирович Политанский (RU) | AUTOMOTIVE FUEL AND METHOD FOR ITS PRODUCTION |
-
2011
- 2011-04-19 EP EP20110163065 patent/EP2514804A1/en not_active Withdrawn
-
2012
- 2012-04-19 CN CN201280019111.6A patent/CN103597061A/en active Pending
- 2012-04-19 US US14/112,873 patent/US9005316B2/en not_active Expired - Fee Related
- 2012-04-19 CA CA 2833473 patent/CA2833473A1/en not_active Abandoned
- 2012-04-19 RU RU2013151748/04A patent/RU2567541C2/en not_active IP Right Cessation
- 2012-04-19 WO PCT/EP2012/057199 patent/WO2012143465A1/en active Application Filing
- 2012-04-19 EP EP12720823.9A patent/EP2699656A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2842432A (en) * | 1953-12-07 | 1958-07-08 | Texas Co | Supplementary fuel mixture for cold starting diesel engines |
US4276055A (en) * | 1979-09-05 | 1981-06-30 | Huang James P H | Novel fuel composition and the process of preparing same |
US6013114A (en) * | 1997-01-28 | 2000-01-11 | Clariant Gmbh | Environmentally friendly diesel fuel |
US6113661A (en) * | 1997-06-09 | 2000-09-05 | Elf Antar France | Fuel composition for diesel engines containing oxygenated compounds |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016084393A (en) * | 2014-10-24 | 2016-05-19 | 理研香料ホールディングス株式会社 | Odorant for fuel |
Also Published As
Publication number | Publication date |
---|---|
RU2013151748A (en) | 2015-05-27 |
CA2833473A1 (en) | 2012-11-26 |
US9005316B2 (en) | 2015-04-14 |
EP2514804A1 (en) | 2012-10-24 |
CN103597061A (en) | 2014-02-19 |
EP2699656A1 (en) | 2014-02-26 |
WO2012143465A1 (en) | 2012-10-26 |
RU2567541C2 (en) | 2015-11-10 |
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